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 *     obtain a copy of the License at
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package org.glassfish.concurrent.admin.listener;

import com.sun.enterprise.util.i18n.StringManager;
import fish.payara.internal.api.PostBootRunLevel;
import jakarta.annotation.PostConstruct;
import jakarta.inject.Inject;
import org.glassfish.concurrent.admin.ManagedExecutorServiceBaseManager;
import org.glassfish.concurrent.config.ManagedExecutorService;
import org.glassfish.concurrent.config.ManagedScheduledExecutorService;
import org.glassfish.concurrent.config.ManagedThreadFactory;
import org.glassfish.hk2.runlevel.RunLevel;
import org.jvnet.hk2.annotations.Service;
import org.jvnet.hk2.config.ConfigListener;
import org.jvnet.hk2.config.Transactions;
import org.jvnet.hk2.config.UnprocessedChangeEvent;
import org.jvnet.hk2.config.UnprocessedChangeEvents;

import java.beans.PropertyChangeEvent;
import java.util.ArrayList;
import java.util.List;

@Service
@RunLevel(PostBootRunLevel.VAL)
public class ResourcesConfigListener implements ConfigListener {

    private static StringManager sm
            = StringManager.getManager(ManagedExecutorServiceBaseManager.class);

    @Inject
    private Transactions transactions;

    @Override
    public UnprocessedChangeEvents changed(PropertyChangeEvent[] events) {
        List<UnprocessedChangeEvent> unprocessedChangeEvents = new ArrayList<>(1);

        for (PropertyChangeEvent propertyChangeEvent : events) {
            if ("use-virtual-threads".equals(propertyChangeEvent.getPropertyName())
                    && !propertyChangeEvent.getOldValue().equals(propertyChangeEvent.getNewValue())) {

                unprocessedChangeEvents.add(
                    new UnprocessedChangeEvent(
                            propertyChangeEvent, sm.getString("virtual.threads.change.requires.restart")));
            }
        }
        return new UnprocessedChangeEvents(unprocessedChangeEvents);
    }

    @PostConstruct
    public void postConstruct() {
        transactions.addListenerForType(ManagedExecutorService.class, this);
        transactions.addListenerForType(ManagedScheduledExecutorService.class, this);
        transactions.addListenerForType(ManagedThreadFactory.class, this);
    }
}
